Patents by Inventor Maricel Marquez

Maricel Marquez has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Methods for altering fluid rheology
    Patent number: 9803132
    Abstract: A method includes placing a treatment fluid including a crosslinked gel in a wellbore penetrating a subterranean formation, the crosslinked gel including a gelling agent and a borate crosslinking agent, de-crosslinking a portion of the crosslinked gel, the de-crosslinking induced by a sufficient change in operating pressure, the de-crosslinking providing a release of active sites on the borate crosslinking agent and reducing the viscosity of the treatment fluid, and providing a borate-affinity agent to capture the released active sites on the borate crosslinking agent. A fracturing fluid includes a gelling agent, a borate crosslinking agent, a latent borate-affinity agent, and a proppant.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: October 31, 2017
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Michael James Fuller, Maricel Marquez, William David Norman
  • METHODS FOR ALTERING FLUID RHEOLOGY
    Publication number: 20160032174
    Abstract: A method includes placing a treatment fluid including a crosslinked gel in a wellbore penetrating a subterranean formation, the crosslinked gel including a gelling agent and a borate crosslinking agent, de-crosslinking a portion of the crosslinked gel, the de-crosslinking induced by a sufficient change in operating pressure, the de-crosslinking providing a release of active sites on the borate crosslinking agent and reducing the viscosity of the treatment fluid, and providing a borate-affinity agent to capture the released active sites on the borate crosslinking agent. A fracturing fluid includes a gelling agent, a borate crosslinking agent, a latent borate-affinity agent, and a proppant.
    Type: Application
    Filed: February 18, 2014
    Publication date: February 4, 2016
    Applicant: Chevron U.S.A. Inc.
    Inventors: Michael James Fuller, Maricel Marquez, William David Norman